3g of crystalline product from 500g of bark is a 0.6% yield. Without digging too deeply into the literature I found ACRB yields anywhere from 0.4% to 1.0%.
0.6% yellow crystals plus enough goo/wax/wet crystals/oil to experiment with and make "free" changa is a perfectly acceptable yield in my opinion. You've done an excellent job here, especially for a first run on unknown material.
I am of the opinion that the 2% MHRB from days of yore was an anomaly, potentially caused by peculiar growth conditions in certain geographic areas. Soon after it was discovered demand exploded & caused prices to spike, suppliers to change business models, and governments to crack down. This lead to further price hikes as suppliers had to circumvent further import/export controls, etc etc etc.
In short, we were spoiled by a decade or more of 2% MHRB that is getting cost-prohibitive, difficult to source, & legally problematic in certain places. Returning to the other sources of DMT such as ACRB or even Phalaris grass (and accepting lower percent yields) seems to me to be the path forward. Yes, the extraction protocol will need to be revised (there is interesting work being done with things like dry ice and activated carbon) but protocol always needs to be tweaked when something changes in the lab.
This is wonderful, excellent chemistry. I no longer have the responsibility of tagging threads for the archives, but IMO this thread definitely should make the cut.
And now (with apologies) some homework: I am very curious to see what your final results are, as well as what happens with the xylene pulls, but recognize that final evaps will take a while. Take your time but don't forget about us! The results of your 2nd run at the same material would be real interesting too, should you decide to run it instead of storing the other 500g. Again, take your time but don't forget about us! Finally, I would love to read any bioassay reports of the final product(s) you are comfortable writing up over in Storming The Gates. Make sure to shamelessly cross-link them here so that future topiates can find them easily!
Thank you again for your clear reporting, your attention to detail, and for allowing us to come along on this journey. I'm still confident that some day my buddy Freddie will turn up after his ill-fated 2015 voyage to Tristan da Cunha on the sloop, and threads like this will help him get back up to speed real quick...
Edited by Phineas_Carmichael, 02 November 2022 - 01:09 AM.